 /*******************************************************************************
  * Copyright (c) 2004, 2005 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  * IBM Corporation - initial API and implementation
  *******************************************************************************/
 package org.eclipse.ui.internal.presentations.util;

 import org.eclipse.swt.graphics.Point;
 import org.eclipse.swt.widgets.Control;
 import org.eclipse.ui.presentations.StackDropResult;

 /**
  * @since 3.0
  */
 public abstract class TabDragHandler {

     /**
      * Returns the StackDropResult for the location being dragged over.
      *
      * @param currentControl control being dragged over
      * @param location mouse position (display coordinates)
      * @param initialTab the index of the tab in this stack being dragged,
      * or -1 if dragging a tab from another stack.
      * @return the StackDropResult for this drag location
      */
     public abstract StackDropResult dragOver(Control currentControl,
             Point location, int initialTab);

     public abstract int getInsertionPosition(Object cookie);
 }

